#include<iostream>
using namespace std;
int main()
{
    int n = 0;
    while (cin >> n)
    {
        int count = 0;
        for (int i = 1; i <= n; i++)
        {
            int sum = 0;
            for (int j = 1; j < i; j++)
            {
                if (i % j == 0)
                    sum += j;
            }
            if (sum == i)
            {
                count++;
            }
        }
        cout << count << endl;
    }
    return 0;
}